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ElasticStack笔记(一)介绍
阅读量:519 次
发布时间:2019-03-07

本文共 3433 字,大约阅读时间需要 11 分钟。

ELK Stack Tutorial


Intro to ELK Stack

The ELK Stack, now renamed as the Elastic Stack, is a collection of open-source tools developed and maintained by Elastic. The stack includes Elasticsearch, Logstash, and Kibana. These tools collectively enable users to collect, store, analyze, and visualize diverse data sources in real time, making them highly valuable for log management and data analytics.

The components of the ELK Stack are as follows:

  • E stands for Elasticsearch: A NoSQL database based on Apache Lucene, used for storing and searching logs.
  • L stands for Logstash: A data pipeline tool for collecting and processing logs from various sources.
  • K stands for Kibana: A visualization tool that leverages Elasticsearch for displaying analytics and dashboards.

What is Elasticsearch?

Elasticsearch is a powerful open-source search engine that serves as the backbone of the ELK Stack. It operates on a distributed document store model, offering features like full-text search, near real-time indexing, and horizontal scalability. Key capabilities include:

  • Schema-free document storage
  • RESTful API with JSON output
  • Multi-language and geolocation support
  • Horizontal scaling and real-time searches

Elasticsearch is widely used for applications requiring fast, complex searches and 분석 across large datasets.


What is Logstash?

Logstash is the data collection and processing layer of the ELK Stack. It acts as a pipeline, ingesting logs from various sources, transforming them, and sending them to Elasticsearch for storage and analysis. Its key features include:

  • Input handling for structured and unstructured data
  • Flexible filtering and normalization options
  • Plug-in support for connecting to multiple data sources

Logstash ensures that logs from different systems are centralized, standardized, and prepared for deeper analysis.


What is Kibana?

Kibana is the visualization component of the ELK Stack, providing a unified dashboard for Elasticsearch data. It enables users to explore, visualize, and interact with logs and analytics in a user-friendly manner. Kibana supports a variety of visualization types, including charts, graphs, tables, and maps.

Key features of Kibana include:

  • Real-time data exploration
  • Interactive search capabilities
  • Customizable dashboards
  • Easy sharing and snapshotting of visualizations

ELK Stack Benefits

The ELK Stack offers several advantages:

  • Scalability: Elasticsearch and Kibana support horizontal scaling, making them ideal for handling large volumes of data.
  • ** Flexibility**: Logs can be collected and processed from various sources, ensuring data consistency.
  • Real-time Analytics: The stack is designed for fast data processing and visualization, enabling real-time insights.
  • Ease of Use: Kibana provides a intuitive interface, making it accessible to both technical and non-technical users.

Why Log Analysis?

In today's cloud-based environments, monitoring and troubleshooting are critical for ensuring system reliability and performance. The ELK Stack is particularly useful for log analysis, enabling DevOps engineers and system administrators to:

  • Monitor server and application performance
  • Track user behavior and security events
  • Analyze application logs from different platforms (e.g., AWS, web servers)

By centralizing log data and using tools like Elasticsearch and Kibana, organizations can gain better visibility into their systems and make informed decisions for smoother operations.

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